Improvement in apparatus for refrigerating, cooling, and preserving



vPatented March 12,1867.

Refrigerator,

P."r LAWSON.

'n van for; fem,

'UNITED STATES, PATENT y OEEIcE.

rE-'rEn Lnvvsom 0E LOWELL, MASSACHUSETTS.

ltlPllOVlElMENT IN APPARATUS FOR RFRIGERATlNG, COOLING, AND PRESERVING.

Specification forming part of Letters Patent No. 62860, dated March 12, 1867.

To all whom t may concern:

Be it known that I, PETER LAWSON, of Lowell, in the county of Middlesex and State of Massachusetts, have made a new and use; ful Improvement in Apparatus for Preserving, Cooling, Vand Refrigeratin g, the same being applicable in the construction of safes, refrigerators, preserving-houses, and other similar structures; and I hereby declare the following to be a full and exact description of thesame, reference being had to the accompanying drawings, making a partei' this specification, in which- Figure 1 shows a front elevation of my invention applied to a refrigerator, safe, or preserving chamberl or chambers; and Fig. 2, a vertical section through line m .fr of Fig. l.

It is important to be able to introduce and remove articles from refrigerators, safes, preserving-houses, and the like without the necessity of going into them, and also to introduce and remove articles from any part in a convenient manner; and to this end my improvement and invention cons-ist in constructing in such apparatus either a. revolving tableor movable shelf' or platform, operated by suitable gearing or machinery moved from Without, so as to bring the shelves, platforms, or other supporters of articles in the refrigerator or other structure in such a position that any article placed on the shelf, table, or platform may be easily reached through the door or opening. v

In the drawings, A is the body of a square or rectangular refrigerator, safe, or preserving-chamber, divided into 'two apartments, one above the other, with doors T. In the lower apartment is a shaft, B, on which are fixed one or more round or other shaped ta- A bles, G. The shaft B is held upright by the bracket or support b, and the step and bearing D. On said shaft is fixed a bevel cogwheel, G, which engages with a corresponding bevel-gear on shaft g, on the end of which is the crank-Wheel R. By turning the crank R the platforms or tables C are made to re volve, and thus bring successively any portion of the table to the front part or opening in the refrigerator or other chamber. In the upper portion of the chamber is a platform or table, M, with a rack, p, which engages with the pinion q, so as to move the table M back and forth" by turning the crank S on the shaft t. Any convenient number of these movable tables or shelves may be placed in the body of the refrigerator, and they may be made solid or lattice form, as may be most convenient. The table M serves to introduce and hold the ice or other material. v

I have shown a shelf or table moving back and forth in theupper portion, and revolving tables in the lower portion, of the coolingchamber; but these may be interchanged, or only one and the same device may be used in both chambers.

Only twoshelves or tables are shown on the shaft B, but the number may be increased or decreased, as required by the size of the apparatus or other condition.

For moving the shelves or tables I have described a common cog-gear; but any other equivalent machinery may be used instead.

My invention is especially useful in the construction of refrigerators, provision-safes, preserving-houses, and the like, since it enables one toI introduce or remove articles without disturbing the air. but slightly, and where preservative gases are used in such structures articles may be put in or removed without the necessity of entering the body of the preserving-chamber.

I have shown the bevel-gear for revolving the tables on the upper part of the shaft B; but for ordinary refrigerators I prefer to put them at the lower end of the shaft B, and for this purpose the shaft may be extended below the lattice licor H, so that the wheel q and Shaft g shall occupy the space K beneath the floor H, and be thus removed from the main portion of the refrigerator.

I have shown the bevel-gearin g for ,revolving the table; but this may be omitted by providing friction-pulleys or any kind of brake to hold the tables in any required position. In that case the shaft or tables are revolved by hand.

Having thus described my invention, what I claim, and ent of the United States, is

l. An upright shaft Wi -h one or more tables or shelves, and suitable means to revolve the same, in combination with the interior of a desire to secure by Letters Patrefrigerator, provision-safe, or preservingstructure, of one or more revolving tables, C,

house, or similar structure, substantially as with one or more movable shelves, M, subhex ein set forth and described; stantially as herein set forth and described.

2. One or more shelves, M, rackp, and pinion q, in combination with the body of a. refriger- PETER LAWSON' ator or similar structure, substantially as Witnesses:

herein described and set forth. T. G. CONNOLLY, 3. The combination, in a. refrigerator or like THOS. CROPLEY. 

